Nerd Ralph loves cheap and dirty hacks, and for that we applaud him. His latest endeavor is a LiFePO4 battery charger that he made out of parts he had on hand for under $0.50 US. (Although we ...

The most useful thing to monitor is the temperature profile of the fermentation process, and [Mare] created an exceptional IoT system to do that using LoRa wireless and solar power. It’s not ...

The system combines a multi-junction organic solar cell with a dual-ion organic ... the scientists explained, adding that IoT environments have strict inherent limitations for size.